The scrolling is smooth for me but I'm finding that it seems to hold up on certain elements of the page (even on this page)
I'm using a logitech mouse with 3 line scroll size.
When I get it certain lines on the webpage my scroll event is "soaked up" i.e. I scroll but nothing happens the first time, I scroll again and off it goes
Just thought I'd add that I'm XP(sp2) IE7 beta 3 Intel 3ghz nVidia 6800.